List twenty output and input devices?

Output devices:
1. Monitor
2. Printer
3. Speaker
4. Projector
5. Headphones
6. Plotter
7. Digital signage display
8. Touchscreen display
9. LED/LCD display
10. Braille display

Input devices:
1. Keyboard
2. Mouse
3. Scanner
4. Webcam
5. Microphone
6. Joystick
7. Graphics tablet
8. Barcode reader
9. Touchpad
10. Game controller

Output Devices:

1. Monitor
2. Printer
3. Speaker
4. Projector
5. Headphone
6. LED display
7. LCD panel
8. OLED screen
9. Braille printer
10. Plotter

Input Devices:

1. Keyboard
2. Mouse
3. Touchscreen
4. Microphone
5. Scanner
6. Webcam
7. Joystick
8. Gamepad
9. Graphics tablet
10. Optical character recognition (OCR) device